Originally Posted by Clinton
Is anyone aware of the process through which CASA went to justify the change that's now embodied in ENR 1.1 para 9.1.7?
It was the industry that pushed for the current setup. The actual process took a couple of years, mainly through RAPAC, and I'll give credit to CASA for working hard to come up with a solution that satisfied industry. There is some earlier history about changes CASA made without much /any consultation in 2013, but essentially, it was industry that didn't like using the Area freq for uncharted airports.
I think that the original CASA rules were the best. If the airport was on the charts, use the unique CTAF for the location (if allocated) or in other cases, the Multicom, 126.7, otherwise stay on Area, keep your trap shut and your eyeballs out.